8:00 – 4:00 CSIP

• Working on building a Drools test case structured around wrapped Maps.
• Built the wrapped objects and Maps, and have the sandbox created
• And here’s how you do it. Probably not as efficient as it could be, but pretty general case.

  #created on: Apr 11, 2012
  package com.sample
  
  #list any import classes here.
  import com.sample.WrappedObject;
  import com.sample.WrappedMap;
  
  #declare any global variables here
  
  dialect "java"
  
  rule "rule Floats less than six"
  
      when
  
          WrappedMap($wo:getObjectByName("myFloat")) // condition
          eval($wo.NumericLessThan(6))
      then
          System.out.println("n--------------------------------n"+$wo.toString());
  
  end

• Need to add some methods for handling String compares and for other types of objects
• Working on getting Hibernate to talk to information_schema in mySql. I’m trying to use the eclipse tools, and I get this error:
• 
• Stopping for the day. Will talk to Dong about this tomorrow.

8:00 – 4:30 CSIP

• Now that I have my Hibernate Eclipse plugins working, back to chapter 9.
• Well, the plugins work fine, but when I tried to add an element to a query, the build broke and I was unable to get it to work again, even after restoring to the earliest version. Went on to chapter 12, but the DB appears to broken there too.
• According to Dong, this is because the HSQL instance is not persisted in the test, so all the data drops out. Switching the dialect to MySQL, which runs as a service on my box fixed all problems but one – an exception that said the DB couldn’t be reached. Which was odd, because it was accessed and the tables were created and populated. Go figure.
• Talked to Mike about his experience with dynamic object creation using Hibernate. It looks pretty straightforward, as long as you have a ‘generic’ object that is wrapped around Map(s) (Collections?) of some kind. Now I need to see if I can build a Drools engine that will reason over elements in a collection contained in an object.

8:00 – 3:30 CSIP

• Hibernate chapter 6
• Chapter 7. Learning about annotations like all the other cool kids. Done. Chapter 8 on Monday.

8:00 – 4:00 CSIP

• Hibernate Chapter 3. Working on getting to chapter 8, which covers dynamic creation. “Chapter 8 discusses criteria queries, an interesting mechanism that lets you express the constraints on the entities you want, using a natural Java API. This lets you build Java objects to represent the data you want to find, which is easier for people who aren’t database experts to understand; lets you leverage your IDE’s code completion as a memory aid; and even gives you compile-time checking of your syntax. It also supports a form of “query by example,” where you can supply objects that are similar to the ones you’re searching for, which is particularly handy for implementing search interfaces in an application.“
• Chapter 4
• Tried to change a query from foo = :upper(mySearchTerm) to foo like ‘%upper(mySearchTerm)%’ and failed completely. Dong suggested restrictions, but I don’t see how to do that in the hbm.xml <![CDATA[…]]> section.
• Chapter 5
• Chapter 6